Shimano Ultegra R8170 Di2 Groupset with Aeolus Pro 3V Carbon Wheels - 12-Speed Disc Brake Road Bike Components for Professional Cycling & Endurance Races

Shimano Ultegra R8170 Di2 12-Speed Build Kit w/ Aeolus Pro 3V Wheels – Take-Off

This Shimano Ultegra R8170 Di2 12-speed build kit is the perfect foundation for building out a modern endurance or all-road bike. Featuring Shimano’s wireless Di2 shifting, compact gearing, and a versatile carbon Aeolus Pro 3V wheelset, this take-off package delivers a fast, comfortable, and responsive ride.

Please note: This kit was removed from a brand-new, unridden bike. Components may show light signs of installation such as mounting marks. Includes only the items shown in the photos.

Included in this kit:

• Shimano Ultegra R8170 Di2 Shifters – 12-Speed
  Wireless dual control levers for fast, smooth electronic shifting and hydraulic braking.

• Shimano Ultegra R8150 Di2 Front Derailleur – Braze-On
  Compact, lightweight design for quick, precise 2x12 front shifts.

• Shimano Ultegra R8150 Di2 Rear Derailleur – 34T Max Cog
  Integrated charging port, Bluetooth connectivity, and Shadow RD+ chain management.

• Shimano Ultegra R8100 Crankset – 50/34T, 175mm Length
  Compact gearing and hollow forged arms for efficient power transfer and low weight.

• Shimano Ultegra R8100 Cassette – 11-34T, 12-Speed
  Hyperglide+ technology provides seamless shifting under load across a wide gear range.

• Shimano M8100 Chain – 12-Speed
  Durable and precise chain compatible with both Ultegra and XT 12-speed systems.

• Shimano BT-DN300 Di2 Battery
  Internal seatpost battery with three SD300 ports for streamlined Di2 setups.

• Shimano Ultegra Hydraulic Disc Calipers – Flat Mount (Front & Rear)
  Consistent, powerful braking with low-profile design and clean hose routing.

• Shimano CL800 Rotors – 160mm, Centerlock (Front & Rear)
  Quiet, high-performance rotors designed to handle long descents and high heat.

• Bontrager Aeolus Pro 3V Carbon Wheels – Tubeless Ready
  37mm deep OCLV Carbon rims with wide internal profile for stability and comfort.

  • Front: 100x12mm thru axle

  • Rear: 142x12mm thru axle, Shimano 11-speed freehub

• Bontrager R3 Tires – 700x32c, Tubeless Ready, 120 TPI
  Fast, grippy, and puncture-resistant with aramid bead and endurance-ready volume.

• Bontrager Elite IsoZone VR-SF Handlebar – Alloy, 44cm Width
  Vibration-damping IsoZone design, Di2 routing, 75mm reach, 128mm drop.

• Trek RCS Pro Stem – 100mm Length, -7° Rise
  Clean, lightweight alloy stem with Blendr integration for computer or light mounting.

Why this kit?
This is a full-featured, road/gravel-ready build kit that pairs wireless precision shifting with carbon wheel speed and endurance-oriented comfort. It’s a smart way to complete your frameset with high-end performance and clean integration.